If (and only if) the length of each pair of sides is greater than the third side, then it is possible to make a triangle.
Hypotenuse,Adjacent and opposite in a triangle and these sides can be worked out
A triangle
If you mean side lengths of 5, 4 and 1 then it is not possible to construct any triangle from the given dimensions.
-- Make sure you have the lengths of all three sides -- Add up the lengths of all three sides to get the perimeter of the triangle.
No
No
three
Yes, an Isosceles.
To determine if you can make more than one triangle with a given set of side lengths, you can use the triangle inequality theorem, which states that the sum of the lengths of any two sides must be greater than the length of the remaining side. If the side lengths meet this condition, you can form a triangle, but if the side lengths are the same (like in the case of an equilateral triangle), only one unique triangle can be formed. Additionally, if the angles are not specified and the side lengths allow for different arrangements, multiple triangles may be possible.
triangle
A trapezoid and a triangle can make a triangle or another trapezoid, among others.
Any shape that is enclosed and has three sides is a triangle.